Camera optical lens

ABSTRACT

A camera optical lens includes, from an object side to an image side: a first lens having a negative refractive power; a second lens having a positive refractive power; a third lens having a positive refractive power; a fourth lens having a positive refractive power; and a fifth lens having a negative refractive power. 2.50≤f3/f≤6.00, −2.00≤R4/R3≤−1.00, and 1.00≤d1/d2≤1.80. f denotes a focal length of the camera optical lens; f3 denotes a focal length of the third lens; R3 denotes a curvature radius of an object-side surface of the second lens; R4 denotes a curvature radius of an image-side surface of the second lens; d1 denotes an on-axis thickness of the first lens; d2 denotes an on-axis distance from an image-side surface of the first lens to an object-side surface of the second lens. The camera optical lens can achieve good optical performance while achieving ultra-thin, wide-angle lenses having large apertures.

TECHNICAL FIELD

The present disclosure relates to the field of optical lens, and moreparticularly, to a camera optical lens suitable for handheld terminaldevices such as smart phones or digital cameras and suitable for cameradevices such as monitors or PC lenses.

BACKGROUND

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but in general thephotosensitive devices of camera lens are nothing more than chargecoupled device (CCD) or complementary metal-oxide semiconductor sensor(CMOS sensor), and as the progress of the semiconductor manufacturingtechnology makes the pixel size of the photosensitive devices becomesmaller, plus the current development trend of electronic productstowards better functions and thinner and smaller dimensions, miniaturecamera lenses with good imaging quality therefore have become amainstream in the market.

In order to obtain better imaging quality, the lens that istraditionally equipped in mobile phone cameras adopts a three-piece orfour-piece lens structure. However, with the development of technologyand the increase of the diverse demands of users, and as the pixel areaof photosensitive devices is becoming smaller and smaller and therequirement of the system on the imaging quality is improvingconstantly, a five-piece lens structure gradually appears in lensdesigns. Although the common five-piece lens has good opticalperformance, its settings on refractive power, lens spacing and lensshape still have some irrationality, which results in that the lensstructure cannot achieve a high optical performance while satisfyingdesign requirements for ultra-thin, wide-angle lenses having largeapertures.

Therefore, it is necessary to provide a camera optical lens that hasgood optical performance and satisfies the requirements for ultra-thin,wide-angle, large-aperture design.

SUMMARY

In view of the problems, the present disclosure aims to provide a cameraoptical lens, which can solve a problem that traditional camera opticallenses are not fully ultra-thinned, large-apertured and wide-angled.

A camera optical lens includes a first lens, a second lens, a thirdlens, a fourth lens, and a fifth lens that are sequentially arrangedfrom an object side to an image side. The first lens has a negativerefractive power, the second lens has a positive refractive power, thethird lens has a positive refractive power, the fourth lens has apositive refractive power, and the fifth lens has a negative refractivepower. The camera optical lens satisfies: 2.50≤f3/f≤6.00;−2.00≤R4/R3≤−1.00; and 1.00≤d1/d2≤1.80, where f denotes a focal lengthof the camera optical lens; f3 denotes a focal length of the third lens;R3 denotes a curvature radius of an object-side surface of the secondlens; R4 denotes a curvature radius of an image-side surface of thesecond lens; d1 denotes an on-axis thickness of the first lens; and d2denotes an on-axis distance from an image-side surface of the first lensto the object-side surface of the second lens.

As an improvement, the camera optical lens further satisfies:−1.50≤f5/f4≤−1.00, where f4 denotes a focal length of the fourth lens;and f5 denotes a focal length of the fifth lens.

As an improvement, the camera optical lens further satisfies:−4.52≤f1/f≤−1.12, 0.75≤(R1+R2)/(R1−R2)≤3.07, and 0.04≤d1/TTL≤0.17, wheref1 denotes a focal length of the first lens; R1 denotes a curvatureradius of an object-side surface of the first lens; R2 denotes acurvature radius of the image-side surface of the first lens; and TTLdenotes a total optical length from the object-side surface of the firstlens to an image plane of the camera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies:0.75≤f2/f≤3.49, −0.65≤(R3+R4)/(R3−R4)≤−0.01, and 0.08≤d3/TTL≤0.26, wheref2 denotes a focal length of the second lens; d3 denotes an on-axisthickness of the second lens; and TTL denotes a total optical lengthfrom an object-side surface of the first lens to an image plane of thecamera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies:−13.40≤(R5+R6)/(R5−R6)≤−0.61 and 0.02≤d5/TTL≤0.07, where R5 denotes acurvature radius of an object-side surface of the third lens; R6 denotesa curvature radius of an image-side surface of the third lens; d5denotes an on-axis thickness of the third lens; and TTL denotes a totaloptical length from an object-side surface of the first lens to an imageplane of the camera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies:0.41≤f4/f≤1.38, 0.43≤(R7+R8)/(R7−R8)≤1.93, and 0.11≤d7/TTL≤0.38, wheref4 denotes a focal length of the fourth lens; R7 denotes a curvatureradius of an object-side surface of the fourth lens; R8 denotes acurvature radius of an image-side surface of the fourth lens; d7 denotesan on-axis thickness of the fourth lens; and TTL denotes a total opticallength from an object-side surface of the first lens to an image planeof the camera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies:−2.54≤f5/f≤−0.60, 0.95≤(R9+R10)/(R9−R10)≤3.97, and 0.05≤d9/TTL≤0.17,where f5 denotes a focal length of the fifth lens; R9 denotes acurvature radius of an object-side surface of the fifth lens; R10denotes a curvature radius of an image-side surface of the fifth lens;d9 denotes an on-axis thickness of the fifth lens; and TTL denotes atotal optical length from an object-side surface of the first lens to animage plane of the camera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies: FNO≤2.23,where FNO denotes an F number of the camera optical lens.

As an improvement, the camera optical lens further satisfies: FOV≥119°,where FOV denotes a field of view of the camera optical lens.

As an improvement, the camera optical lens further satisfies:2.94≤f12/f≤42.32, where f12 denotes a combined focal length of the firstlens and the second lens.

the camera optical lens according to the present disclosure achieveshigh optical performance while satisfying design requirements forultra-thin, wide-angle lenses having large apertures, especiallysuitable for camera lens assembly of mobile phones and WEB camera lensesformed by imaging elements for high pixels, such as CCD and CMOS.

BRIEF DESCRIPTION OF DRAWINGS

Many aspects of the exemplary embodiment can be better understood withreference to the following drawings. The components in the drawings arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure. Moreover,in the drawings, like reference numerals designate corresponding partsthroughout the several views.

FIG. 1 is a schematic diagram of a structure of a camera optical lens inaccordance with Embodiment 1 of the present disclosure;

FIG. 2 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 1;

FIG. 3 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 1;

FIG. 4 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a structure of a camera optical lens inaccordance with Embodiment 2 of the present disclosure;

FIG. 6 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 5;

FIG. 7 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 5;

FIG. 8 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 5;

FIG. 9 is a schematic diagram of a structure of a camera optical lens inaccordance with Embodiment 3 of the present disclosure;

FIG. 10 is a schematic diagram of a longitudinal aberration of thecamera optical lens shown in FIG. 9;

FIG. 11 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 9; and

FIG. 12 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 9.

DESCRIPTION OF EMBODIMENTS

The present disclosure will hereinafter be described in detail withreference to several exemplary embodiments.

To make the technical problems to be solved, technical solutions andbeneficial effects of the present disclosure more apparent, the presentdisclosure is described in further detail together with the figure andthe embodiments. It should be understood the specific embodimentsdescribed hereby is only to explain the disclosure, not intended tolimit the disclosure.

Embodiment 1

Referring to FIG. 1 to FIG. 4, the present disclosure provides a cameraoptical lens 10 in Embodiment 1. In FIG. 1, a left side is an objectside, and a right side is an image side. The camera optical lens 10mainly includes, from an object side to an image side, a first lens L1,an aperture S1, a second lens L2, a third lens L3, a fourth lens L4, anda fifth lens L5. An optical element such as an optical filter GF or aglass plate is arranged between the fifth lens L5 and an image plane Si.

As an example, the first lens L1 is made of a plastic material, thesecond lens L2 is made of a plastic material, the third lens L3 is madeof a plastic material, the fourth lens L4 is made of a plastic material,and the fifth lens L5 is made of a plastic material.

A focal length of the camera optical lens 10 is defined as f, a focallength of the third lens L3 is defined as f3, a curvature radius of anobject-side surface of the second lens L2 is defined as R3, a curvatureradius of an image-side surface of the second lens L2 is defined as R4,an on-axis thickness of the first lens L1 is defined as d1, and anon-axis distance from an image-side surface of the first lens L1 to anobject-side surface of the second lens L2 is defined as d2. The cameraoptical lens 10 satisfies:

2.50≤f3/f≤6.00  (1);

−2.00≤R4/R3≤−1.00  (2); and

1.00≤d1/d2≤1.80  (3),

where the condition (1) specifies a ratio of the focal length f3 of thethird lens L3 to the focal length f, and this condition facilitates toimprove a performance of the system.

The condition (2) specifies a shape of the second lens L2. Thiscondition can alleviate deflection of light passing through the lenswhile effectively reducing aberrations.

When d1/d2 in the condition (3) satisfies the condition, the imagingquality can be improved.

As an example, a focal length of the fourth lens L4 is defined as f4, afocal length of the fifth lens L5 is defined as f5, and the cameraoptical lens 10 satisfies a condition of −1.50≤f5/f4≤−1.00, whichspecifies a ratio of the focal length f5 of the fifth lens L5 to thefocal length f4 of the fourth lens L4. This condition is beneficial forcorrection of the field curvature, thereby improving the imagingquality.

The first lens L1 has a negative refractive power, and it includes anobject-side surface being convex in a paraxial region and an image-sidesurface being concave in the paraxial region.

As an example, the focal length of the camera optical lens 10 is f, afocal length of the first lens L1 is defined as f1, and the cameraoptical lens 10 satisfies a condition of −4.52≤f1/f≤−1.12, whichspecifies a ratio of the negative refractive power of the first lens L1to the focal length f of the camera optical lens 10. When the conditionis satisfied, the first lens L1 has an appropriate negative refractivepower, thereby facilitating reducing aberrations of the system whilefacilitating development towards ultra-thin, wide-angle lenses. As anexample, −2.83≤f1/f≤−1.39.

As an example, a curvature radius of the object-side surface of thefirst lens L1 is defined as R1, a curvature radius of the image-sidesurface of the first lens L1 is defined as R2, and the camera opticallens 10 satisfies a condition of 0.75≤(R1+R2)/(R1−R2)≤3.07. This canreasonably control a shape of the first lens L1, so that the first lensL1 can effectively correct spherical aberrations of the system. As anexample, 1.20≤(R1+R2)/(R1−R2)≤2.45.

As an example, an on-axis thickness of the first lens L1 is defined asd1, a total optical length from the object-side surface of the firstlens L1 to an image plane of the camera optical lens along an optic axisis defined as TTL, and the camera optical lens 10 satisfies:0.04≤d1/TTL≤0.17. This condition can facilitate achieving ultra-thinlenses. As an example, 0.06≤d1/TTL≤0.13.

In this embodiment, the second lens L2 has a positive refractive power,and it includes an object-side surface being convex in a paraxial regionand an image-side surface being convex in the paraxial region.

As an example, the focal length of the camera optical lens 10 is definedas f, a focal length of the second lens L2 is defined as f2, and thecamera optical lens 10 satisfies a condition of 0.75≤f2/f≤3.49. Bycontrolling the negative refractive power of the second lens L2 withinthe reasonable range, correction of aberrations of the optical systemcan be facilitated. As an example, 1.20≤f2/f≤2.79.

As an example, a curvature radius of the object-side surface of thesecond lens L2 is defined as R3, a curvature radius of the image-sidesurface of the second lens L2 is defined as R4, the camera optical lens10 satisfies a condition of −0.65≤(R3+R4)/(R3−R4)≤−0.01, which specifiesa shape of the second lens L2. This can facilitate correction of anon-axis aberration with development towards ultra-thin lenses. As anexample, −0.41≤(R3+R4)/(R3−R4)≤−0.01.

As an example, an on-axis thickness of the second lens L2 is defined asd3, the total optical length from the object-side surface of the firstlens L1 to an image plane of the camera optical lens 10 along an opticaxis is defined as TTL, and the camera optical lens 10 satisfies acondition of 0.08≤d3/TTL≤0.26. This condition can facilitate achievingultra-thin lenses. As an example, 0.13≤d3/TTL≤0.21.

The third lens L3 has a positive refractive power, and it includes anobject-side surface being convex in a paraxial region and an image-sidesurface being concave in the paraxial region.

As an example, a curvature radius of the object-side surface of thethird lens L3 is defined as R5, a curvature radius of the image-sidesurface of the third lens L3 is defined as R6, and the camera opticallens 10 satisfies a condition of −13.40≤(R5+R6)/(R5−R6)≤−0.61, whichspecifies a shape of the third lens L3. This condition can alleviate thedeflection of light passing through the lens while effectively reducingaberrations. As an example, −8.38≤(R5+R6)/(R5−R6)≤−0.76.

As an example, an on-axis thickness of the third lens L3 is defined asd5, the total optical length from the object-side surface of the firstlens L1 to an image plane of the camera optical lens 10 along an opticaxis is defined as TTL, and the camera optical lens 10 satisfies acondition of 0.02≤d5/TTL≤0.07. This can facilitate achieving ultra-thinlenses. As an example, 0.04≤d5/TTL≤0.06.

The fourth lens L4 has a positive refractive power, and it includes theobject-side surface being concave in a paraxial region and theimage-side surface being convex in the paraxial region.

As an example, a focal length of the fourth lens L4 is f4, the focallength of the camera optical lens 10 is f, and the camera optical lens10 further satisfies a condition of 0.41≤f4/f≤1.38, which specifies aratio of the focal length f4 of the fourth lens L4 to the focal length fof the system. The condition facilitates improving the performance ofthe optical system. As an example, 0.66≤f4/f≤1.10.

As an example, a curvature radius of the object-side surface of thefourth lens L4 is defined as R7, a curvature radius of the image-sidesurface of the fourth lens L4 is defined as R8, and the camera opticallens 10 satisfies a condition of 0.43≤(R7+R8)/(R7−R8)≤1.93, whichspecifies a shape of the fourth lens L4. This can facilitate correctionof an off-axis aberration with development towards ultra-thin,wide-angle lenses. As an example, 0.69≤(R7+R8)/(R7−R8)≤1.55.

As an example, an on-axis thickness of the fourth lens L4 is defined asd7, the total optical length from the object-side surface of the firstlens L1 to an image plane of the camera optical lens 10 along an opticaxis is defined as TTL, the camera optical lens 10 satisfies a conditionof 0.11≤d7/TTL≤0.38. This can facilitate achieving ultra-thin lenses. Asan example, 0.18≤d7/TTL≤0.30.

The fifth lens L5 has a negative refractive power, and it includes anobject-side surface being convex in a paraxial region and an image-sidesurface being concave in the paraxial region.

As an example, a focal length of the fifth lens L5 is f5, the focallength of the camera optical lens 10 is f, and the camera optical lens10 further satisfies a condition of −2.54≤f5/f≤−0.60. Limitations on thefifth lens L5 can effectively make a light angle of the camera opticallens 10 gentle and reduce the tolerance sensitivity. As an example,−1.58≤f5/f≤−0.75.

As an example, a curvature radius of the object-side surface of thefifth lens L5 is defined as R9, a curvature radius of the image-sidesurface of the fifth lens L5 is defined as R10, and the camera opticallens 10 satisfies a condition of 0.95≤(R9+R10)/(R9−R10)≤3.97, whichspecifies a shape of the fifth lens L5. This can facilitate correctionof an off-axis aberration with development towards ultra-thin,wide-angle lenses. As an example, 1.52≤(R9+R10)/(R9−R10)≤3.18.

As an example, an on-axis thickness of the fifth lens L5 is defined asd9, the total optical length from the object-side surface of the firstlens L1 to an image plane of the camera optical lens 10 along an opticaxis is defined as TTL, and the camera optical lens 10 satisfies acondition of 0.05≤d9/TTL≤0.17. This can facilitate achieving ultra-thinlenses. As an example, 0.08≤d9/TTL≤0.14.

As an example, an F number FNO of the camera optical lens 10 is smallerthan or equal to 2.23, thereby leading to a large aperture.

As an example, a field of view (FOV) of the camera optical lens 10 isgreater than or equal to 119°, thereby achieving the wide-angleperformance.

As an example, an image height of the camera optical lens 10 is definedas IH, and the camera optical lens 10 satisfies a condition ofTTL/IH≤1.81. This condition can facilitate achieving ultra-thin lenses.

As an example, the focal length of the camera optical lens 10 is definedas f, a combined focal length of the first lens L1 and the second lensL2 as defined as f12, and the camera optical lens 10 satisfies acondition of 2.94≤f12/f≤42.32. This can eliminate aberration anddistortion of the camera optical lens 10, suppress the back focal lengthof the camera optical lens 10, and maintain miniaturization of thecamera lens system group. As an example, 4.71≤f12/f≤33.86.

When the focal length of the camera optical lens 10 of the presentdisclosure, the focal length and the curvature radius of lens satisfiesthe above conditions, the camera optical lens 10 will have good opticalperformance while satisfying design requirements for ultra-thin,wide-angle lenses having large apertures. With these characteristics,the camera optical lens 10 is suitable for camera optical lens assemblyof mobile phones and WEB camera optical lenses formed by imagingelements for high pixel such as CCD and CMOS.

In addition, in the camera optical lens 10 provided by this embodiment,the surface of each lens can be set as an aspherical surface, and it iseasy for the aspherical surface to be made into a shape other than aspherical surface, to obtain more control variables, for reducingaberrations, thereby reducing the number of lenses used, so that thetotal length of the camera optical lens 10 can be effectively reduced.In this embodiment, both the object-side surface and the image-sidesurface of each lens are all aspherical surfaces.

It is worth mentioning that since the first lens L1, the second lens L2,the third lens L3, the fourth lens L4, and the fifth lens L5 have thesame structure and parameter relationship as above, the camera opticallens 10 can reasonably allocate the refractive power, spacing and shapeof each lens, and thus various aberrations are corrected.

In the following, examples will be used to describe the camera opticallens 10 of the present disclosure. The symbols recorded in each examplewill be described as follows. The focal length, on-axis distance,curvature radius, on-axis thickness, inflexion point position, andarrest point position are all in units of mm.

TTL: Optical length (the total optical length from the object-sidesurface of the first lens L1 to the image plane of the camera opticallens along the optic axis), in a unit of mm.

F number (FNO): a ratio of an effective focal length of the cameraoptical lens to an entrance pupil diameter of the camera optical lens.

In addition, at least one of the object-side surface and the image-sidesurface of each lens can be provided with an inflection point and/or anarrest point to meet the requirements of high-quality imaging, and forspecific implementation options, see below.

The design data of the camera optical lens 10 shown in FIG. 1 is shownbelow.

Table 1 lists the curvature radius of the object-side surface and thecurvature radius R of the image-side surface of the first lens L1 tooptical filter GF constituting the camera optical lens 10 in theEmbodiment 1 of the present disclosure, the on-axis thickness of eachlens, the distance d between adjacent lenses, the refractive index ndand the abbe number vd. It should be noted that R and d are both inunits of millimeter (mm).

TABLE 1 R d nd νd S1 ∞ d0= −0.811 R1 6.782 d1= 0.486 nd1 1.5661 ν1 37.71R2 1.376 d2= 0.332 R3 2.530 d3= 0.810 nd2 1.5444 ν2 55.82 R4 −3.483 d4=0.077 R5 1.683 d5= 0.230 nd3 1.6153 ν3 25.94 R6 2.448 d6= 0.065 R7−14.707 d7= 1.053 nd4 1.5444 ν4 55.82 R8 −0.907 d8= 0.030 R9 2.199 d9=0.539 nd5 1.6700 ν5 19.39 R10 0.786 d10= 0.574 R11 ∞ d11= 0.210 ndg1.5168 νg 64.17 R12 ∞ d12= 0.316

In the table, meanings of various symbols will be described as follows.

S1: aperture;

R: curvature radius of an optical surface, a central curvature radiusfor a lens;

R1: curvature radius of the object-side surface of the first lens L1;

R2: curvature radius of the image-side surface of the first lens L1;

R3: curvature radius of the object-side surface of the second lens L2;

R4: curvature radius of the image-side surface of the second lens L2;

R5: curvature radius of the object-side surface of the third lens L3;

R6: curvature radius of the image-side surface of the third lens L3;

R7: curvature radius of the object-side surface of the fourth lens L4;

R8: curvature radius of the image-side surface of the fourth lens L4;

R9: curvature radius of the object-side surface of the fifth lens L5;

R10: curvature radius of the image-side surface of the fifth lens L5;

R11: curvature radius of an object-side surface of the optical filterGF;

R12: curvature radius of an image-side surface of the optical filter GF;

d: on-axis thickness of a lens and an on-axis distance between lenses;

d0: on-axis distance from the aperture S1 to the object-side surface ofthe first lens L1;

d1: on-axis thickness of the first lens L1;

d2: on-axis distance from the image-side surface of the first lens L1 tothe object-side surface of the second lens L2;

d3: on-axis thickness of the second lens L2;

d4: on-axis distance from the image-side surface of the second lens L2to the object-side surface of the third lens L3;

d5: on-axis thickness of the third lens L3;

d6: on-axis distance from the image-side surface of the third lens L3 tothe object-side surface of the fourth lens L4;

d7: on-axis thickness of the fourth lens L4;

d8: on-axis distance from the image-side surface of the fourth lens L4to the object-side surface of the fifth lens L5;

d9: on-axis thickness of the fifth lens L5;

d10: on-axis distance from the image-side surface of the fifth lens L5to the object-side surface of the optical filter GF;

d11: on-axis thickness of the optical filter GF;

d12: on-axis distance from the image-side surface of the optical filterGF to the image plane;

nd: refractive index of d line;

nd1: refractive index of d line of the first lens L1;

nd2: refractive index of d line of the second lens L2;

nd3: refractive index of d line of the third lens L3;

nd4: refractive index of d line of the fourth lens L4;

nd5: refractive index of d line of the fifth lens L5;

ndg: refractive index of d line of the optical filter GF;

vd: abbe number;

v1: abbe number of the first lens L1;

v2: abbe number of the second lens L2;

v3: abbe number of the third lens L3;

v4: abbe number of the fourth lens L4;

v5: abbe number of the fifth lens L5;

vg: abbe number of the optical filter GF.

Table 2 shows aspherical data of respective lens in the camera opticallens 10 according to Embodiment 1 of the present disclosure.

TABLE 2 Conic coefficient Aspherical coefficients k A4 A6 A8 A10 A12 R1−1.9785E+02  3.6274E−01 −5.9038E−01 1.9759E+00 −5.4146E+00 1.0102E+01 R2−6.7795E+01  2.9791E+00 −1.5938E+01 7.2221E+01 −1.0009E+02 −4.1326E+02 R3 −1.3276E+02  5.8257E−01  7.0531E+00 −1.8278E+02   1.7428E+03−7.2817E+03  R4 −4.6014E−01 −1.0450E+00 −2.2668E−01 1.8991E+01−1.2413E+02 4.4833E+02 R5 −1.4304E+01 −8.2657E−01  4.4575E−01 3.8736E−01−6.3198E+00 2.1341E+01 R6  5.1026E−01 −6.6413E−02 −1.8169E+00 6.1322E+00−1.2792E+01 1.9135E+01 R7  1.4063E+02  3.3727E−01 −1.3719E+00 3.0072E+00−3.9183E+00 3.5722E+00 R8 −6.4905E−01  2.4039E−01 −5.6956E−01 9.5475E−01−7.2389E−01 5.6851E−02 R9 −2.2574E+01 −1.1825E−01 −9.0722E−01 1.7775E+00−1.7472E+00 9.6613E−01 R10 −2.7504E+00 −4.3558E−01  4.2701E−01−2.8828E−01   1.3307E−01 −4.1861E−02  Conic coefficient Asphericalcoefficients k A14 A16 A18 A20 R1 −1.9785E+02 −1.2087E+01 8.8626E+00−3.6102E+00  6.2039E−01 R2 −6.7795E+01  1.6244E+03 −3.2507E+02 −4.3221E+03  3.2521E+03 R3 −1.3276E+02  9.5744E+02 1.0536E+05−3.5784E+05  3.8354E+05 R4 −4.6014E−01 −1.0400E+03 1.5828E+03−1.4523E+03  6.0103E+02 R5 −1.4304E+01 −3.5327E+01 2.0406E+01 2.3301E+01 −3.1107E+01 R6  5.1026E−01 −1.9527E+01 1.2636E+01−4.6301E+00  7.1710E−01 R7  1.4063E+02 −2.3464E+00 9.2463E−01−9.4761E−02 −4.0501E−02 R8 −6.4905E−01  2.8526E−01 −1.7510E−01  4.6632E−02 −7.2879E−03 R9 −2.2574E+01 −3.6213E−01 1.0747E−01−1.3418E−02 −1.7710E−03 R10 −2.7504E+00  8.5758E−03 −1.0393E−03  5.9305E−05 −5.2744E−07

In Table 2, k is a conic coefficient, and A4, A6, A8, A10, A12, A14,A16, A18, and A20 are aspherical coefficients.

y=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶ +A18x ¹⁸ +A20x ²⁰  (4),

where x is a vertical distance between a point on an aspherical curveand the optic axis, and y is an aspherical depth (a vertical distancebetween a point on an aspherical surface, having a distance of Rx fromthe optic axis, and a surface tangent to a vertex of the asphericalsurface on the optic axis).

In the present embodiment, an aspherical surface of each lens surfaceuses the aspherical surfaces shown in the above condition (4). However,the present disclosure is not limited to the aspherical polynomial formshown in the condition (4).

Table 3 and Table 4 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 10 of thisembodiment. P1R1 and P1R2 represent the object-side surface and theimage-side surface of the first lens L1, respectively; P2R1 and P2R2represent the object-side surface and the image-side surface of thesecond lens L2, respectively; P3R1 and P3R2 represent the object-sidesurface and the image-side surface of the third lens L3, respectively;P4R1 and P4R2 represent the object-side surface and the image-sidesurface of the fourth lens L4, respectively; and P5R1 and P5R2 representthe object-side surface and the image-side surface of the fifth lens L5,respectively. The data in the column “inflexion point position” refersto vertical distances from inflexion points arranged on each lenssurface to the optic axis of the camera optical lens 10. The data in thecolumn “arrest point position” refers to vertical distances from arrestpoints arranged on each lens surface to the optic axis of the cameraoptical lens 10.

TABLE 3 Number of Inflexion Inflexion Inflexion Inflexion inflexionpoint point point point points position 1 position 2 position 3 position4 P1R1 1 1.065 / / / P1R2 1 0.595 / / / P2R1 0 / / / / P2R2 0 / / / /P3R1 1 0.225 / / / P3R2 3 0.335 0.815 0.925 / P4R1 4 0.155 0.435 0.5651.025 P4R2 2 0.975 1.235 / / P5R1 3 0.305 1.175 1.345 / P5R2 2 0.4551.965 / /

TABLE 4 Number of Arrest point Arrest point arrest points position 1position 2 P1R1 0 / / P1R2 0 / / P2R1 0 / / P2R2 0 / / P3R1 1 0.395 /P3R2 1 0.595 / P4R1 2 0.305 1.095 P4R2 0 / / P5R1 1 0.515 / P5R2 1 1.145/

Table 13 below further lists various values of Embodiments 1, 2 and 3and values corresponding to parameters which are specified in the aboveconditions.

As shown in Table 3, Embodiment 1 satisfies the various conditions.

FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 435 nm, 486 nm, 546 nm, 587 nm and656 nm after passing the camera optical lens 10. FIG. 4 illustrates afield curvature and a distortion of light with a wavelength of 546 nmafter passing the camera optical lens 10, in which a field curvature Sis a field curvature in a sagittal direction and T is a field curvaturein a tangential direction.

In this embodiment, the entrance pupil diameter ENPD of the cameraoptical lens 10 is 0.843 mm. The image height IH is 2.62 mm. The fieldof view (FOV) along a diagonal direction is 119.40°. Thus, the cameraoptical lens 10 can satisfy design requirements of ultra-thin,large-aperture and wide-angle while having on-axis and off-axisaberrations sufficiently corrected, thereby leading to better opticalcharacteristics.

Embodiment 2

FIG. 5 is a structural schematic diagram of the camera optical lens 20in Embodiment 2. Embodiment 2 is basically the same as Embodiment 1 andinvolves symbols having the same meanings as Embodiment 1, and the sameportions will not be repeated. Only differences therebetween will bedescribed in the following.

The fourth lens L4 includes the object-side surface being convex in theparaxial region.

Table 5 and Table 6 show design data of a camera optical lens 20 inEmbodiment 2 of the present disclosure.

TABLE 5 R d nd νd S1 ∞ d0= −0.719 R1 4.436 d1= 0.362 nd1 1.5661 ν1 37.71R2 1.523 d2= 0.359 R3 4.595 d3= 0.749 nd2 1.5444 ν2 55.82 R4 −4.733 d4=0.060 R5 2.044 d5= 0.230 nd3 1.6153 ν3 25.94 R6 2.761 d6= 0.078 R712.676 d7= 1.199 nd4 1.5444 ν4 55.82 R8 −0.913 d8= 0.030 R9 1.531 d9=0.461 nd5 1.6700 ν5 19.39 R 0.692 d10= 0.500 R11 ∞ d11= 0.210 ndg 1.5168νg 64.17 R12 ∞ d12= 0.482

Table 6 shows aspherical data of respective lenses in the camera opticallens 20 according to Embodiment 2 of the present disclosure.

TABLE 6 Conic coefficient Aspherical coefficients k A4 A6 A8 A10 A12 R1−2.0984E+01 3.6197E−01 −2.1391E−02  −1.6380E+00 9.1373E+00 −2.6083E+01R2 −1.5585E+01 1.0572E+00 7.2051E+00 −1.6540E+02 1.9860E+03 −1.4287E+04R3 −8.9488E+01 7.4258E−02 2.8562E+00 −6.2844E+01 7.4066E+02 −5.1697E+03R4  9.9803E+00 −1.0609E+00  3.1552E+00 −1.7488E+01 6.7504E+01−1.5715E+02 R5 −6.1418E+00 −7.7173E−01  1.0699E+00 −2.5755E+00−9.0464E+00   8.2065E+01 R6  7.6531E−01 4.1437E−02 −2.2499E+00  1.0862E+01 −3.2214E+01   6.2488E+01 R7 −1.0000E+01 2.0042E−01−2.0092E+00   8.9624E+00 −2.1673E+01   3.2025E+01 R8 −6.5617E−017.2156E−02 4.0611E−01 −1.8816E+00 4.2979E+00 −5.6978E+00 R9 −2.0111E+015.0544E−02 −1.1227E+00   2.3069E+00 −2.9490E+00   2.5836E+00 R10−2.6352E+00 −3.8245E−01  3.5507E−01 −2.3176E−01 1.0202E−01 −2.9197E−02Conic coefficient Aspherical coefficients k A14 A16 A18 A20 R1−2.0984E+01 4.4895E+01 −4.6454E+01  2.6786E+01 −6.6481E+00  R2−1.5585E+01 6.3881E+04 −1.7296E+05  2.5991E+05 −1.6611E+05  R3−8.9488E+01 2.1610E+04 −5.2593E+04  6.7815E+04 −3.5184E+04  R4 9.9803E+00 1.8250E+02 −2.7871E+00 −2.1737E+02 1.5669E+02 R5 −6.1418E+00−2.6133E+02   4.4570E+02 −4.0053E+02 1.4857E+02 R6  7.6531E−01−7.9612E+01   6.4171E+01 −2.9637E+01 5.9713E+00 R7 −1.0000E+01−2.9943E+01   1.7362E+01 −5.7129E+00 8.1579E−01 R8 −6.5617E−014.6041E+00 −2.1980E+00  5.6624E−01 −6.0649E−02  R9 −2.0111E+01−1.5534E+00   6.0115E−01 −1.3143E−01 1.2122E−02 R10 −2.6352E+004.8872E−03 −3.3630E−04 −1.7621E−05 3.1055E−06

Table 7 and Table 8 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 20.

TABLE 7 Number of Inflexion Inflexion Inflexion inflexion point pointpoint points position 1 position 2 position 3 P1R1 1 0.965 / / P1R2 0 // / P2R1 0 / / / P2R2 0 / / / P3R1 2 0.245 0.805 / P3R2 2 0.395 0.975 /P4R1 1 0.995 / / P4R2 2 0.955 1.265 / P5R1 3 0.355 1.285 1.455 P5R2 20.475 1.945 /

TABLE 8 Number of Arrest point arrest points position 1 P1R1 0 / P1R2 0/ P2R1 0 / P2R2 0 / P3R1 1 0.415 P3R2 1 0.715 P4R1 0 / P4R2 0 / P5R1 10.625 P5R2 1 1.245

Table 13 below further lists various values of Embodiment 2 and valuescorresponding to parameters which are specified in the above conditions.Obviously, the camera optical lens of this embodiment satisfies thevarious conditions.

FIG. 6 and FIG. 7 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 435 nm, 486 nm, 546 nm, 587 nm and656 nm after passing the camera optical lens 20. FIG. 8 illustrates afield curvature and a distortion of light with a wavelength of 546 nmafter passing the camera optical lens 20, in which a field curvature Sis a field curvature in a sagittal direction and T is a field curvaturein a tangential direction.

In this embodiment, the entrance pupil diameter ENPD of the cameraoptical lens 20 is 0.850 mm. The image height IH is 2.62 mm. The fieldof view (FOV) along a diagonal direction is 119.40°. Thus, the cameraoptical lens 20 can satisfy design requirements of ultra-thin,large-aperture and wide-angle while having on-axis and off-axisaberrations sufficiently corrected, thereby leading to better opticalcharacteristics.

Embodiment 3

FIG. 9 is a structural schematic diagram of the camera optical lens 30in Embodiment 3. Embodiment 3 is basically the same as Embodiment 1 andinvolves symbols having the same meanings as Embodiment 1, and the sameportions will not be repeated. Only differences therebetween will bedescribed in the following.

In this embodiment, the third lens L3 has the image-side surface beingconvex in the paraxial region.

Table 9 and Table 10 show design data of a camera optical lens 30 inEmbodiment 3 of the present disclosure.

TABLE 9 R d nd νd S1 ∞ d0= −0.866 R1 7.628 d1= 0.529 nd1 1.5661 ν1 37.71R2 1.517 d2= 0.299 R3 2.645 d3= 0.810 nd2 1.5444 ν2 55.82 R4 −5.184 d4=0.060 R5 3.054 d5= 0.230 nd3 1.6153 ν3 25.94 R6 −67.851 d6= 0.060 R7−6.203 d7= 1.077 nd4 1.5444 ν4 55.82 R8 −0.784 d8= 0.030 R9 2.204 d9=0.495 nd5 1.6700 ν5 19.39 R10 0.684 d10= 0.500 R11 ∞ d11= 0.210 ndg1.5168 νg 64.17 R12 ∞ d12= 0.420

Table 10 shows aspherical data of respective lenses in the cameraoptical lens 30 according to Embodiment 3 of the present disclosure.

TABLE 10 Conic coefficient Aspherical coefficients k A4 A6 A8 A10 A12 R1−4.6344E+01  2.3564E−01 −8.7496E−03  −3.7052E−01 9.3162E−01 −1.0801E+00R2 −1.6361E+01  9.8963E−01 6.4026E+00 −9.6575E+01 7.3304E+02 −2.9877E+03R3 −1.1122E+01  1.5454E−01 2.5776E−01 −1.2295E+00 2.0200E+00  0.0000E+00R4  8.6441E+00 −1.4640E+00 6.4427E+00 −4.3736E+01 1.9040E+02 −5.0306E+02R5 −1.5000E+01 −1.2878E+00 4.8496E+00 −2.2767E+01 7.7526E+00  3.1410E+02R6 −1.0000E+01 −3.3012E−01 4.8256E+00 −2.8001E+01 7.9265E+01 −1.3060E+02R7  8.0511E+00  8.6382E−04 3.3300E+00 −1.6582E+01 4.1437E+01 −6.3710E+01R8 −7.1893E−01  3.3148E−01 −1.4604E−02  −1.3449E+00 3.9433E+00−5.3404E+00 R9 −3.6795E+01 −2.3470E−01 1.6167E−01 −1.4488E+00 3.9823E+00−5.4041 E+00  R10 −4.0204E+00 −2.5940E−01 2.1508E−01 −1.3868E−017.0052E−02 −2.9375E−02 Conic coefficient Aspherical coefficients k A14A16 A18 A20 R1 −4.6344E+01 6.3981E−01 −1.5388E−01 0.0000E+00  0.0000E+00R2 −1.6361E+01 6.3713E+03 −5.4455E+03 0.0000E+00  0.0000E+00 R3−1.1122E+01 0.0000E+00  0.0000E+00 0.0000E+00  0.0000E+00 R4  8.6441E+008.1944E+02 −7.6886E+02 3.1991E+02  0.0000E+00 R5 −1.5000E+01−1.2508E+03   2.2888E+03 −2.1384E+03   8.2218E+02 R6 −1.0000E+011.3375E+02 −8.4027E+01 2.9288E+01 −4.2233E+00 R7  8.0511E+00 6.3357E+01−3.9945E+01 1.4552E+01 −2.3360E+00 R8 −7.1893E−01 3.8384E+00 −1.4299E+002.3669E−01 −9.0705E−03 R9 −3.6795E+01 4.0001E+00 −1.6364E+00 3.4804E−01−3.0096E−02 R10 −4.0204E+00 9.3811E−03 −1.9870E−03 2.3966E−04−1.2262E−05

Table 11 and Table 12 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 30.

TABLE 11 Number of Inflexion Inflexion Inflexion Inflexion inflexionpoint point point point points position 1 position 2 position 3 position4 P1R1 1 1.125 / / / P1R2 0 / / / / P2R1 0 / / / / P2R2 1 0.715 / / /P3R1 1 0.165 / / / P3R2 4 0.235 0.355 0.715 0.895 P4R1 4 0.235 0.5950.765 1.015 P4R2 1 1.045 / / / P5R1 2 0.285 1.175 / / P5R2 2 0.455 1.915/ /

TABLE 12 Number of Arrest point Arrest point arrest points position 1position 2 P1R1 0 / / P1R2 0 / / P2R1 0 / / P2R2 0 / / P3R1 1 0.285 /P3R2 0 / / P4R1 2 0.385 1.075 P4R2 0 / / P5R1 1 0.515 / P5R2 1 1.185 /

Table 13 below further lists various values of Embodiment 3 and valuescorresponding to parameters which are specified in the above conditions.Obviously, the camera optical lens of this embodiment satisfies thevarious conditions.

FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 435 nm, 486 nm, 546 nm, 587 nm and656 nm after passing the camera optical lens 30. FIG. 12 illustrates afield curvature and a distortion of light with a wavelength of 546 nmafter passing the camera optical lens 30, in which a field curvature Sis a field curvature in a sagittal direction and T is a field curvaturein a tangential direction.

In this embodiment, the entrance pupil diameter ENPD of the cameraoptical lens 30 is 0.842 mm. The image height IH is 2.62 mm. The fieldof view (FOV) along a diagonal direction is 119.40°. Thus, the cameraoptical lens 30 can satisfy design requirements of ultra-thin,large-aperture and wide-angle while having on-axis and off-axisaberrations sufficiently corrected, thereby leading to better opticalcharacteristics.

Table 13 below further lists various values of Embodiment 1, Embodiment2, and Embodiment 3 and values corresponding to parameters which arespecified in the above conditions.

TABLE 13 Parameters and Embodiment Embodiment Embodiment Conditions 1 23 f3/f 4.16 5.98 2.52 R4/R3 −1.38 −1.03 −1.96 d1/d2 1.46 1.01 1.77 f 1.872 1.886 1.870 f1 −3.133 −4.263 −3.432 f2 2.814 4.389 3.325 f3 7.77811.280 4.712 f4 1.721 1.607 1.535 f5 −2.130 −2.391 −1.686  f12 11.01953.214 22.654 FNO 2.22 2.22 2.22 TTL 4.722 4.720 4.720 FOV 119.40 119.40119.40 IH 2.62 2.62 2.62

The above are only the embodiments of the present disclosure. It shouldbe pointed out here that for those of ordinary skill in the art,improvements can be made without departing from the inventive concept ofthe present disclosure, but these all belong to the scope of the presentdisclosure.

What is claimed is:
 1. A camera optical lens, comprising, from an objectside to an image side: a first lens having a negative refractive power;a second lens having a positive refractive power; a third lens having apositive refractive power; a fourth lens having a positive refractivepower; and a fifth lens having a negative refractive power, wherein thecamera optical lens satisfies:2.50≤f3/f≤6.00;−2.00≤R4/R3≤−1.00; and1.00≤d1/d2≤1.80, where f denotes a focal length of the camera opticallens; f3 denotes a focal length of the third lens; R3 denotes acurvature radius of an object-side surface of the second lens; R4denotes a curvature radius of an image-side surface of the second lens;d1 denotes an on-axis thickness of the first lens; and d2 denotes anon-axis distance from an image-side surface of the first lens to theobject-side surface of the second lens.
 2. The camera optical lens asdescribed in claim 1, wherein the camera optical lens further satisfies:−1.50≤f5/f4≤−1.00, where f4 denotes a focal length of the fourth lens;and f5 denotes a focal length of the fifth lens.
 3. The camera opticallens as described in claim 1, wherein the camera optical lens furthersatisfies:−4.52≤f1/f≤−1.12;0.75≤(R1+R2)/(R1−R2)≤3.07; and0.04≤d1/TTL≤0.17, where f1 denotes a focal length of the first lens; R1denotes a curvature radius of an object-side surface of the first lens;R2 denotes a curvature radius of the image-side surface of the firstlens; and TTL denotes a total optical length from the object-sidesurface of the first lens to an image plane of the camera optical lensalong an optic axis.
 4. The camera optical lens as described in claim 1,wherein the camera optical lens further satisfies:0.75≤f2/f≤3.49;−0.65≤(R3+R4)/(R3−R4)≤−0.01; and0.08≤d3/TTL≤0.26, where f2 denotes a focal length of the second lens; d3denotes an on-axis thickness of the second lens; and TTL denotes a totaloptical length from an object-side surface of the first lens to an imageplane of the camera optical lens along an optic axis.
 5. The cameraoptical lens as described in claim 1, wherein the camera optical lensfurther satisfies:−13.40≤(R5+R6)/(R5−R6)≤−0.61; and0.02≤d5/TTL≤0.07, where R5 denotes a curvature radius of an object-sidesurface of the third lens; R6 denotes a curvature radius of animage-side surface of the third lens; d5 denotes an on-axis thickness ofthe third lens; and TTL denotes a total optical length from anobject-side surface of the first lens to an image plane of the cameraoptical lens along an optic axis.
 6. The camera optical lens asdescribed in claim 1, wherein the camera optical lens further satisfies:0.41≤f4/f≤1.38;0.43≤(R7+R8)/(R7−R8)≤1.93; and0.11≤d7/TTL≤0.38, where f4 denotes a focal length of the fourth lens; R7denotes a curvature radius of an object-side surface of the fourth lens;R8 denotes a curvature radius of an image-side surface of the fourthlens; d7 denotes an on-axis thickness of the fourth lens; and TTLdenotes a total optical length from an object-side surface of the firstlens to an image plane of the camera optical lens along an optic axis.7. The camera optical lens as described in claim 1, wherein the cameraoptical lens further satisfies:−2.54≤f5/f≤−0.60;0.95≤(R9+R10)/(R9−R10)≤30.97; and0.05≤d9/TTL≤0.17, where f5 denotes a focal length of the fifth lens; R9denotes a curvature radius of an object-side surface of the fifth lens;R10 denotes a curvature radius of an image-side surface of the fifthlens; d9 denotes an on-axis thickness of the fifth lens; and TTL denotesa total optical length from an object-side surface of the first lens toan image plane of the camera optical lens along an optic axis.
 8. Thecamera optical lens as described in claim 1, wherein the camera opticallens further satisfies: FNO≤2.23, where FNO denotes an F number of thecamera optical lens.
 9. The camera optical lens as described in claim 1,wherein the camera optical lens further satisfies: FOV≥119°, where FOVdenotes a field of view of the camera optical lens.
 10. The cameraoptical lens as described in claim 1, wherein the camera optical lensfurther satisfies: 2.94≤f12/f≤42.32, where f12 denotes a combined focallength of the first lens and the second lens.